MC9S12KG128_10 Datasheet, PDF (507/606 Pages) Freescale Semiconductor, Inc – HCS12 Microcontrollers

Chapter 17
Interrupt (INTV1) Block Description
17.1 Introduction
This section describes the functionality of the interrupt (INT) sub-block of the S12 core platform.
A block diagram of the interrupt sub-block is shown in Figure 17-1.
INT
WRITE DATA BUS
HPRIO (OPTIONAL)
HIGHEST PRIORITY
I-INTERRUPT
INTERRUPTS
XMASK
IMASK
INTERRUPT INPUT REGISTERS
AND CONTROL REGISTERS
READ DATA BUS
WAKEUP
RESET FLAGS
VECTOR REQUEST
QUALIFIED
INTERRUPTS
PRIORITY DECODER
INTERRUPT PENDING
VECTOR ADDRESS
Figure 17-1. INTV1 Block Diagram
MC9S12KG128 Data Sheet, Rev. 1.16
Freescale Semiconductor
507